Jeffrey Weissman is an American actor. He has appeared in dozens of motion pictures and TV shows, most notably as George McFly in Back to the Future Part II and III and as Teddy Conway in Pale Rider. He has guest starred spots on Scarecrow and Mrs. King, Max Headroom, Dallas, The Man Show, and with Dick Van Dyke on Diagnosis: Murder and as Screech's Guru on Saved by the Bell. Weissman is a teacher of commedia dell'arte and film technique, with students including both professionals and newcomers to the arts. He also teaches acting for film, directing, writing and improv at San Francisco School of Digital Film Making.